Anomalous quantum oscillations of CeCoIn5 in high magnetic fields

被引：3
|
作者：
Hornung, J. [1 ,2 ,3 ]
Mishra, S. [4 ,6 ]
Stirnat, J. [1 ,2 ,3 ]
Raba, M. [4 ,7 ]
V. Schwarze, B. [1 ,2 ,3 ]
Klotz, J. [1 ,2 ,3 ]
Aoki, D. [5 ]
Wosnitza, J. [1 ,2 ,3 ]
Helm, T. [1 ,2 ]
Sheikin, I. [4 ]
机构：
[1] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD EMFL, D-01328 Dresden, Germany
[2] Helmholtz Zentrum Dresden Rossendorf, Wurzburg Dresden Cluster Excellence Ct Qmat, D-01328 Dresden, Germany
[3] Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01062 Dresden, Germany
[4] UGA, CNRS, Lab Natl Champs Magnet Intenses LNCMI EMFL, F-38042 Grenoble, France
[5] Tohoku Univ, Inst Mat Res, Oarai, Ibaraki 3111313, Japan
[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[7] CEA Grenoble, IRIG DEPHY MEM, 17 Ave Martyrs, F-38000 Grenoble, France
来源：
PHYSICAL REVIEW B | 2021年 / 104卷 / 23期
关键词：
FERMI-SURFACE RECONSTRUCTION; HAAS-VAN-ALPHEN; UNCONVENTIONAL SUPERCONDUCTIVITY; CYCLOTRON MASS; CRITICALITY; DEPENDENCE; HEAT; WAVE;
D O I：
10.1103/PhysRevB.104.235155
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on magnetic-torque and resistivity measurements of the heavy-fermion compound CeCoIn5 in static magnetic fields up to 36 T and temperatures down to 50 mK. While quantum oscillations of the de Haas-van Alphen (dHvA) as well as the Shubnikov-de Haas (SdH) effect confirm the previously reported Fermi surfaces, an analysis of the field dependence reveals two anomalous features. The first is seen at about 22 T as a sharp anomaly in the resistivity for current applied along the a direction. The second appears as nonmonotonic fielddependent oscillation frequencies and amplitudes in both dHvA and SdH signals. This second feature emerges at about 28 T. This field is close to that of the nematic transition reported for CeRhIn5 and the proposed Lifshitz transition in CeIrIn5. We discuss possible common grounds of these latter features that might originate from the very similar band structures of these materials.
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页数：8
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